The USA is encouraging the wearing of face masks. It said face masks could slow down the spread of COVID-19. It wants Americans to make face masks and use scarves. The WHO said people who are not sick do not need masks. Other organisations say face masks can help to slow the virus. They say people in countries like Singapore and South Korea wear masks. In these countries, reported infection rates are lower.

Some experts say masks could cut the risk of spreading the virus and protect those who have not got it. Other officials say we need masks for nurses and doctors. They say masks could make people feel safe and mix with other people. Health experts also worry that homemade masks will not stop people from getting the virus. The White House said: "The most important thing is the social distancing, washing your hands and not touching your face."